Brake-beam.



E. A. LE BEAU.

BRAKE BEAM.

APPLICATION FILED JULY 24, 1911.

Patented Apr. 23, 1912.

a [1Z2 Bi/7a 6. z rrz NITE stratus PATENT OFFICE.

ERNEST A. LE BEAU, or CHICAGO, ILLINOIS, AssIGNon To CHICAGO RAILWAYEQUIP- MENT COMPANY, or CHICAGO, ILLINOIS, A ORPORATION OF ILLINOIS.

BRAKE-BEAM.

Specification of Letters Patent.

Application filed July 24, 1911.

Patented Apr. 23, 1912.

Serial No. 640,091.

through one end of the brake beam showing my improved head lockingdevice. Fig. 2 is a sectional view on line 22, Flg. 1. Fig. 3 1s alongltudlnal sectional view of a mothfied form of locking. Fig. 4 is adetailed view of a locking block.

This invention relates to a new and useful improvement in brake beams,the object being to provide the head with a locking block by which wearbetween the front face of the sleeve and the head may be taken up toprevent the rattling of the parts and also provide means whereby thehead will be locked or clamped in proper position.

In the drawings: 1 indicates the compression member of the brake beamand 2 is the tension member;

3 is the sleeve into which the end of the compression member finds aseat and through which the end of the tension member passes, the nut 4on the tension member impinging against the end of said sleeve,

as shown.

5 is the brake head which is ro-tatably mounted on the sleeve-and abutsagainst a flange 3 thereof, said brake head being held againstlongitudinal displacement by means of a cotter pin 6. The rear face ofthe socket wall of the brake head is preferably provided with serrationso (see Fig. 2). The sleeve 3 is,-preferably at its rear side, providedwith an inclined key-way 3 in which is arranged a longitudinally movablelocking block 7. This locking block is preferably of wedge shape and atits outer face is provided with serrations 7 (see Fig. 4) whichcooperate with the serrations on the brake head. The inner end of thelocking block 7 is provided with an inwardly opening T-shaped groove 7 bwhich is adapted to receive the head 8 of a retrieving bolt 8. This boltpasses through a housing 3 pref- In operation, the spring 9 tends at alltimes to force the wedge-shaped locking block 7 outwardly and by sodoing takes up any wear between the sleeve 3 and the front wall of thebrake head at the point indicated at X thus eliminating lost motion, andby so doing avoiding excess movement of the piston in the brake cylinderin applying the brakes. To retrieve the locking block 7, the nut 11- maybe placed on the end of the retrieving bolt 8 and upon being turneddown, said nut will place the spring under compression and permit thebrake head to be turned freely on the sleeve. WVhen, however, the spring9 is in operative position, it will force the wedge-shaped locking blockbetween the sleeve and the head locking the head in adjusted positionand at the same time taking up all wear at the point X, and in this wayprevent rattling of the parts.

In Fig. 3, I have shown a modified form of my invention in which nospring is employed to automatically take up wear and lock the head inposition, but in lieu thereof a pressure bolt 12 is used which pressurebolt has a head 12 and cooperates with a jam nut 13. By the use of thispressure bolt the wedge-shaped locking block may be positively movedinto locking position.

' What I claim is:

1. In a brake beam, the combination of a part of the brake beam on whichthe head is mounted, said part having a key-way extending in a directionlongitudinally to the beam, a brake head mounted on said part, and awedge-shaped locking block or key arranged in said key-way and engagingmounted, said part having an inclined keyway, a brake head mounted onsaid part, and a wedge-shaped locking block or key arranged in saidkey-way and engaging said head; said locking block being located at therear side of the brake beam so as to take up wear between the front faceof said 1part, in which it is mounted, and the brake iead'.

3. In a brake beam, the combination of a part of the brake beam onwhich. the head is mounted. said part having an inclined key way andlocking block arranged in said hey-Way, a head mounted on said partcooperating with said locking block, and means i'or exerting pressin'eagainst said locking block so as to Wedge the same between the head andthe part on which the head is mounted.

4;. a brake beam, the combination of a part of the brake beam on whichthe head. is mounted, said part having an inclined keyvvay and lockingblock arranged in said lteyovay, a head mounted on said part cooperatingwith said locking block, and means tor exerting yielding pressureagainst said locking block so as to Wedge the same between the head andthe part on Which the head is mounted.

5. in a brake beam, the combination of a part of the brake beam on whichthe brake head is mounted, a b 'ake head mounted on said part, said headhaving serrations on the inner tace of its socket and a longitudinallymovable Wedge-shaped locking block having serrations on its outer faceto engage the serrations on the head.

Q. in. a bralie beam, the combination of a part ot the brake beam onwhich the brake head is mounted, a brake head mounted on said part, saidhead having serrations on the inner face of its socket and alongitudinally movable Wedge-shaped locking block having serrations onits outer taco to engage the serrations on the head, and means formoving said locking block into Wedging action between the head and thepart on which the head is mounted.

7. In a brake beam, the combination of a part of the brake beam on Whichthe brake head is mounted, a brake head mounted on said part. said headhaving serrations on the inner face of its socket and a longitudinallymovable ivedge-shaped locking block having serrations on its outer faceto enthe serrations on the head, and yielding means for moving saidlocking block into vvedging action between the head and the part onwhich the head is mounted.

S. in a brake beam, the combination ot a sleeve having an inclinedkey-Way, a brake head mounted on said sleeve, a locking block arrangedin said key-Way, and means for ivedging said locking block in saidsleeve and brake head.

9. in a brake beam, the combination of a sleeve having an inclinedkey-way, a brake head mounted on said sleeve, a locking block arrangedin said. key-Way, and means for Wedglng said locking block in saidsleeve and brake head; said means cooperating With said sleeve.

10. In a brake beam, the combination of a sleeve having an inclinedkey-Way, a brake head mounted on said sleeve, a locking block arrangedin said key-Way, and yielding means for \vedging said locking block onsaid sleeve and brake head.

11. In a brake beam, the combination of a sleeve having an inclinedkeyovay, a brake head mounted on said sleeve, a locking block arrangedin said keyway, and yielding means for wedging said locking block onsaid sleeve and brake head; said yielding means cooperating with saidsleeve.

12. in a brake beam, the combination of a sleeve having an inclinedhey-Way. a brake head, a Wedge-shaped locking block, a projectionextending from said sleeve, and a retrieving bolt mounted in saidprojection and cooperating with said locking block.

13. in a brake beam, the combination of a sleeve having an inclinedkeyvvay, a brake head, aWedge-shaped locking block, a projectionextending from said sleeve, a retrieving bolt mounted in said projectionand cooperating with said locking block, and a spring surrounding saidretrieving bolt.

14. In a brake beam, the combination of a sleeve having an inclinedkey-Way, a brake head, a \vdedgeshaped locking block arranged in saidkey-Way, said locking block having an imvardly opening T- shaped groovein its end, and a retrieving bolt having a head fitted in said. T-shapedgroove; said retrieving bolt being mounted in a part of the sleeve.

in testimony whereof I hereunto atlix my signature in the presence oftwo Witnesses, this l lth day of July, 1911.

ERNEST A. LE BEAU.

i Vitnesses E. ll. VALKER, M. F. HUN'rooN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

tvashington, D. G.

